JP3592011B2 - Brake device for manual spindle - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a manual spindle brake device provided alongside a spindle such as a ring spinning machine or a ring twisting machine.
[0002]
[Prior art]
Conventionally, as a spindle brake device, as described in Japanese Utility Model Publication No. 63-6221, a brake lever having a structure in which an operating fulcrum is arranged along the axis of the spindle is operated to operate the brake lever. There is known a so-called pinching type brake device in which a pair of brake pieces fixed opposite to each other are pressed from both sides of a body of a spindle worm to apply braking, and as an improved type thereof, a spindle opposing spindle in a brake lever is known. There is also known a brake device with a brake shoe having a configuration in which a brake shoe is attached to a surface of a large area and a brake lever is pushed up to operate the brake shoe so that the brake shoe is brought into contact with a body portion of a spindle work to apply braking. This type of spindle brake device is also called a knee brake because it is operated by pressing a knee against a brake lever.
[0003]
On the other hand, a device that manually operates the brake lever is also called a hand-type spindle brake device, but the braking method is substantially the same as that of the knee brake.
[0004]
[Problems to be solved by the invention]
The brake device for a manual spindle described above has a shorter brake lever and a smaller operating force than the knee brake, so the braking pressure is weaker than the knee brake, and the brake pieces or brake shoes are worn. Then, there is a disadvantage that the braking becomes unstable.
[0005]
The present invention has been made in consideration of the problems of the conventional manual spindle brake device as described above, and provides a manual spindle brake device capable of reliably applying a braking pressure to the spindle. is there.
[0006]
[Means for Solving the Problems]
The present invention comprises a U-shaped member in which a pair of arms are arranged so as to sandwich a spindle, and a tip portion of the arm is pivotally supported by a skirt portion of the spindle, and is attached between the arms in the body portion. Brake shoe, and a brake lever provided outside the U-shaped member, the brake lever is provided with an eccentric cam that can rotate around a horizontal axis, and extends in a direction orthogonal to the long axis of the eccentric cam. When the operating lever is operated on the braking side, the peripheral edge of the eccentric cam as the long axis slides on the fixed surface supporting the spindle, and the eccentric cam has a main body. And a brake device for a manual spindle configured to lift the brake shoe against the spindle lobe .
[0007]
In the present invention, as a specific example of the fixing portion, a spindle rail for fixing a bolster for supporting a spindle is shown, and more specifically, an upper surface of the spindle rail.
In the present invention, the brake lever is preferably configured to be detachable from the main body.
[0008]
In the present invention, it is preferable that the eccentric cam is housed in the main body when not in operation, and that the peripheral edge of the eccentric cam protrudes from the bottom of the main body during operation. According to this configuration, the peripheral edge of the protruding eccentric cam abuts, for example, the upper surface of the spindle rail for fixing the spindle, whereby the main body is inclined, and the brake shoe presses the spindle. The brake shoe can be made of a resin molded body such as engineering plastic.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
FIG. 1 is an exploded perspective view showing a state in which a manual spindle brake device (hereinafter, abbreviated as a spindle brake) according to an embodiment of the present invention is attached to a spindle.
[0010]
In FIG. 1, a spindle lobe 2 is fitted to a lower portion of a spindle 1 and is rotatably supported by a bolster 3. On the other hand, a flange 4 is integrally formed on the upper part of the bolster 3, the bolster 3 is inserted into a mounting hole 5 a of the spindle rail 5, and a tightening nut 6 is inserted into a screw part 3 a formed on the upper part of the bolster 3. Are screwed together, and the spindle mechanism is assembled by sandwiching and fixing the spindle rail 5 between the flange portion (the skirt portion of the spindle) 4 and the tightening nut 6. In addition, the flange portion 4 is provided with fulcrum slots 7, 7 which engage with a fulcrum shaft of a main body portion described later.
[0011]
The spindle brake 8 is provided with fulcrum shafts 8a, 8a which can be engaged with the fulcrum grooves 7, 7 at the respective ends of a pair of arm portions, and the fulcrum shafts 8a, 8a are engaged with the fulcrum grooves 7, 7, respectively. In the state, it is swingable in the direction of arrow A about the fulcrum shafts 8a, 8a. When the main body 8b is tilted, the brake shoe 9 can be pressed against the body 2a of the spindle lobe 2 so that the rotating spindle 1 can be braked.
[0012]
Next, the configuration of the spindle brake 8 will be described in detail with reference to FIGS.
[0013]
2, a spindle brake 8 is composed of a substantially U-shaped member arranged so as to sandwich the body 2a of the spindle worm 2 and has a main body 8b having fulcrum shafts 8a, 8a at each end on the spindle shaft side. It mainly comprises a brake shoe 9 mounted between the arms 8c, 8c in the main body 8b, and a brake lever 10 provided on the opposite side of the fulcrum shafts 8a, 8a in the main body 8b.
[0014]
As shown in FIGS. 3A to 3C, the main body 8b is formed in a substantially U-shape by press molding, and includes a pair of arms 8c, 8c extending from the fulcrum shaft 8a. An upper plate 8d connected to the arms 8c and 8c and cut out in an arc shape corresponding to the body of the spindle 1, and a back plate bent from the upper plate 8d and connected to the arms 8c and 8c. 8e. A projection 8f for positioning and fixing the brake shoe 9 when press-fitting the brake shoe 9 is formed on the lower surface of the upper plate 8d.
[0015]
The back plate 8e is formed with a keyhole-shaped notch 8g with which a rotation shaft (to be described later) of the brake lever 10 is engaged, and the brake lever 10 is vertically disposed diagonally above the notch 8g. A projection-like stopper 8h for holding the posture is formed.
[0016]
The brake shoe 9 is formed of a resin molded product formed into a substantially C-shape so as to sandwich the arc-shaped notch of the upper plate 8d in a U-shape, and has an arc-shaped notch therein corresponding to the arc-shaped notch. A groove is recessed. On the bottom surface of the arc-shaped groove, a locking groove recessed with the same contour as that of the convex portion 8f is formed so that the convex portion 8f can be accommodated and locked. I have. As the resin molded product, for example, an engineering plastic obtained by uniformly mixing glass fibers in thermoplastic polyethylene terephthalate as a base material and then performing injection molding can be used. The reinforced resin molded article mainly composed of a thermoplastic resin has excellent properties required for a brake shoe, namely, rigidity, impact resistance, tensile strength, dimensional stability, heat resistance, and the like. Can be substituted by a thermosetting resin such as a phenol resin which is typically used. Further, since the precision parts can be molded with good fluidity at the time of molding, it is possible to realize a fitting-type brake shoe by eliminating the disadvantage that the precision moldability is poor such as the phenolic resin.
[0017]
The brake lever 10 is made of a resin molded product, and as shown in FIGS. 4 (a) to 4 (c), an oval eccentric cam 10a and a substantially oval eccentric cam engaged with the notch 8g. , And an operating lever 10c extending in a direction perpendicular to the long axis of the eccentric cam 10a. Width w ₂ of the parallel edges in the rotation shaft 10b corresponds to the width w ₁ of the notch 8g of the main body 8b, therefore, when the operating lever 10c is in the lateral position, the notch of the body portion 8b It can be engaged with the portion 8g.
[0018]
Next, the operation of the spindle brake 8 having the above configuration will be described with reference to FIGS.
FIG. 2 corresponds to the non-operation state of the spindle brake, and the operation lever 10c is in the vertical position. In this state, the eccentric cam 10a is stored in the horizontal position, that is, in the main body 8b, and the lower edge 8h of the main body 8b is in contact with the upper surface of the spindle rail 5.
[0019]
FIG. 5 shows the operating state of the spindle brake. By rotating the operation lever 10c in the direction of arrow B toward the horizontal position, the peripheral edge of the eccentric cam 10a gradually projects from the lower edge 8h of the main body 8b, The main body 8b is pushed upward and inclined about the fulcrum shaft 8a. As a result, the brake shoe 9 comes into contact with and presses against the body 2a of the spindle worm 2, and the rotating spindle 1 is braked.
[0020]
According to the configuration using the eccentric cam, the brake shoe 9 can be continuously pressed against the spindle lobe 2, so that a constant braking pressure is always applied even when the brake shoe 9 is worn. It becomes possible. Further, as the operation lever 10c approaches the lateral position, the point of action of the eccentric cam 10a moves to the center of the rotating shaft 10b and is stabilized, so that a constant braking pressure is secured even if the hand is released from the operation lever 10c.
[0021]
In addition, the spindle brake of the present invention can be assembled simply by engaging the brake lever 10 made of resin with the main body 8b to which the brake shoe 9 is attached, so that the manufacturing is simple and the cost of the spindle brake is reduced. Can be achieved.
[0022]
In the present invention, the fixed portion of the spindle support member is the upper surface of the spindle rail in the above embodiment. However, the present invention is not limited to this, and the fixed portion can be in contact with the main body of the spindle brake in a horizontal posture, and is fixed. Any member can be used as long as the member is present.
[0023]
In addition, the brake lever of the present invention is preferably made of a resin molded product. However, the present invention is not limited to this.
In addition, the spindle brake device of the present invention can be applied to a spindle such as a ring spinning machine and a ring twisting machine.
[0024]
【The invention's effect】
As is apparent from the above description, according to the present invention, there is an advantage that it is possible to provide a manual spindle brake device capable of reliably applying a braking pressure to the spindle.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a mounting procedure of a manual spindle brake device according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a configuration of a brake device for a manual spindle according to the present invention.
FIG. 3 is an explanatory diagram showing a configuration of a main body of the brake device.
FIG. 4 is an explanatory diagram showing a configuration of a brake lever of the brake device.
FIG. 5 is a perspective view showing an operation state of the brake device.
[Explanation of symbols]
Reference Signs List 1 spindle 2 spindle worm 3 bolster 4 flange 5 spindle rail 6 tightening nut 7 fulcrum slot 8 spindle brake 8a fulcrum shaft 8b body 8c arm 9 brake shoe 10 brake lever 10a eccentric cam 10c operation lever

Claims (3)

A pair of arms are formed of a U-shaped member arranged so as to sandwich the spindle, and a tip of the arm is attached between the arm in the body and a body that is pivotally supported by the skirt of the spindle. Having a brake shoe and a brake lever provided outside the U-shaped member,
The brake lever includes an eccentric cam that can rotate around a horizontal axis, and an operation lever that extends in a direction orthogonal to a long axis of the eccentric cam. The eccentric cam operates the operation lever toward the braking side. In this case, the peripheral edge of the eccentric cam as the long axis side slides on a fixed surface supporting the spindle, thereby lifting the main body portion and pressing the brake shoe against a spindle worm. A manual brake device for a spindle. The brake device according to claim 1, wherein the fixing surface is an upper surface of a spindle rail. The brake device according to claim 1, wherein the brake lever is configured to be detachable from the main body.

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